I have finally dived into Ethereum mining and was really inspired by the Rosewill server rack builds I see here.
I built 3 rigs,

FrankenRig1

Biostar TB85
EVGA 1200w
6x MSI RX 470 Armor OC

The best hashrate I have achieved without bios mod is 142mhs

FrankenRig 2

Asrock Z97 Extreme4
EVGA 1300w
6x Sapphire RX 480

The best hashrate I have achieved without bios mod is 135mhs

FrankenRigPrime

Asrock Z97 Extreme4
EVGA 1300w
6x Sapphire RX 480

The best hashrate I have achieved without bios mod is 155mhs

What I can't understand is how FrankenRig2 is the exact same build as FrankenRigPrime, everything is exactly the same from the memory, cpu, hdd's etc but I can't get a decent hashrate out of it at all and then FrankenRigPrime is built and the first overclock I put into it (999 core, 2200 memory) and it loves it.








For those who are wondering, yes that is a hacksaw blade.